Improvement in bench-hooks



fgfil' tntwt {ive-Q Weeaeem JOHN HUMPHREYS, OF CHICOPEE FALLS, MASSACHUSETTS.

Letters Patent No. 89,483, dated April 27, 1869.

IMPROVEMENT IN BENCH-BOOKS.

The Schedule referred to in these Letters Patent and making part o! the Ilm.

To all whom it may concern:

Be it known that I, J oHN HUMPBREYS, of Chicopee Falls, Hampden county, Commonwealth of Massachusetts, have invented a new and useful improved.

Bcncll-Hook; and I do hereby declare that the fol# lowing is a full and exact description thereof', reference being had to the accompanying drawings, and to the letters of reference marked thereon.

In the drawings- Figure I is a side view,

Figure II is an end view, and

Figure III is a side View of another arrangement of the parts of my invention.

This invention consists of a device whereby abenchhook can be raised from the level ofthe bench to any height, and sustained in any position, and by the arrangement ofthe parts of this device, without diiculty or loss of time. i

In construct-ion, I form my bench-hook of the upright bar A, working in a slot through the top of the bench, and having in its side a slot or slots, b, for'the projection or thread G, on the slide or cam B, to run through.

This slide is held in place by a guide-piece, D, attached to the underneath side of the bench; or when the'thread is Qn a circular surface, the piece B may be pivoted in the centre at c, Fig. III.

lhe operation of this is as follows:

In Fig. I it will be seen that the position of the upright bar A is such that upon moving the slide B half its length either way, the bar A will either be brought into the position of having its top flush with the top ofthe work-bench, or else be projected to its greatest height above the top of the bench. If, in this last case, the length of the bar A above the table is not sucient, the slide B may be entirely taken out, and the bar A pushed up, until a slot underneath the other in it comes above the guide-piece D, so that the piece B, with the thread C upon it, may be inserted and worked as before, so that by this means any length of bar above the plane of the work-bench may be obtained, as the bar A may be of any convenient length under the table, and contain any desirable number of notches.

When the slot O, instead of being raised from a plane surface, is on the side of a circular surface, the surface in this case being half the circumference of a circle, Fig. III, it can be released from the slot b in the bar A holding it, by simply continuing to turn the piece B, which is bevelled, away from Where the thread ends.

In general use, one-half inch is as much as is required on any carpentes bench of the bar above the bench, but in many eases it is necessary to have more.

By this means I form a bench-hook for carpenters, joiners, and others, simple, strong, easily made, and easily worked, and capable of being graduated to any v nicety, and its simplicity enabling it to be made cheaply enough to come into general use.

And now, having described my invention,

What I claim as new, and desire to secure by Letters Patent, is 1 The combination of the post A with the Apiece B,

having the inclined projection O, and the guide-piece D, substantially as shown and described.

JOHN HUMPHREYS.

y Witnesses: y

EDWARD H. HYDE, R. F. HYDE. 

